Ausgabe des Loggers log_warn (File)

INFO example_logger : this is a information
WARN example_logger : this is a warning
ERROR example_logger : this is an error message
FATAL example_logger : this is a message about a fatal error
INFO example_logger : this is a information
WARN example_logger : this is a warning
ERROR example_logger : this is an error message
FATAL example_logger : this is a message about a fatal error